using System;

namespace Csharp01._1021
{
    public abstract class UserTest
    {
        public abstract void M1();
        public abstract void M2();
        public abstract void M3();
    }

    public class UserTestImpl : UserTest
    {
        public override void M1()
        {
            Console.WriteLine("实现了抽象方法M1");
        }

        public override void M2()
        {
            Console.WriteLine("实现了抽象方法M2");
        }

        public override void M3()
        {
            Console.WriteLine("实现了抽象方法M3");
        }
    }
}